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The keywrap (kw) algorithm has no in-tree user. It has never had an in-tree user, and the patch that added it provided no justification for its inclusion. Even use of it via AF_ALG is impossible, as it uses a weird calling convention where part of the ciphertext is returned via the IV buffer, which is not returned to userspace in AF_ALG. It's also unclear whether any new code in the kernel that does key wrapping would actually use this algorithm. It is controversial in the cryptographic community due to having no clearly stated security goal, no security proof, poor performance, and only a 64-bit auth tag. Later work (https://eprint.iacr.org/2006/221) suggested that the goal is deterministic authenticated encryption. But there are now more modern algorithms for this, and this is not the same as key wrapping, for which a regular AEAD such as AES-GCM usually can be (and is) used instead. Therefore, remove this unused code. There were several special cases for this algorithm in the self-tests, due to its weird calling convention. Remove those too. Cc: Stephan Mueller <smueller@chronox.de> Signed-off-by: Eric Biggers <ebiggers@google.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> # m68k Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
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| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
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| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
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| Makefile | ||
| README | ||
Linux kernel
There are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. Please read Documentation/admin-guide/README.rst first.
In order to build the documentation, use make htmldocs or
make pdfdocs. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory, several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.